A friend of mine is currently pregnant and considering having an abortion. She has had 2 abortions in the past. I've heard that it is possible for an abortion(even more so multiple abortions) to damage a woman's ability to become pregnant again later on. Is this true?

I've heard that too, but I don't remember where so I don't know if it was a reliable source. I'd recommend that your friend start using reliabe because or keep her legs closed already... :)

If the abortion is done properly by a licensed doctor in a well equipped clinic, abortions will not damage a woman's ability to have children in the future.

However, any sort of invasive medical procedure done on the body is taxing upon the body itself... so I suggest to your friend that she get on birth control or use some sort of contraceptive if she doesn't want to get pregnant in the future. Abortions cost more than condoms + birth control combined.